Residents were left perplexed this week when the waters of Spain's Valira River turned a strange color.
Three elusive True's beaked whales have been captured on camera during an expedition to the Azores.
Sierra Nevada's Dream Chaser space plane is being readied for a new series of tests in California.
Scientists have revealed that Mars was much wetter and therefore more habitable than previously thought.
Engineers have fitted CERN's record-breaking particle accelerator with its first major upgrade.
Scientists have found that frogs and toads possess night vision superior to that of all other animals.
An analysis of mammoth DNA has revealed that the species had become wracked with genetic disease.
Scientists may have finally solved the mystery of the unexplained hissing sound associated with meteors.
Two partial human skulls unearthed in central China could belong to an unknown archaic human species.
In a world first, researchers have managed to create artificial embryos using the stem cells of mice.
Thousands of people turned out last week to throw oranges at one another in the streets of Ivrea.
Scientists have put forward a plan to terraform Mars by surrounding the planet with a magnetic field.
Special humanoid robots could soon be used to help grow replacement skin, bones and organs for patients.
An intriguing optical illusion involving a plate of strawberries has been doing the rounds online.
A new study has indicated that resurrecting long-extinct species could ultimately do more harm than good.
This newly described species of penguin is thought to have walked the Earth over 60 million years ago.
Biologists have warned that up to a half of all species could be wiped out by the end of the century.
In some of the world's most polluted cities, exercising outside can actually do more harm than good.
The local people of Chile's Atacama desert have developed the ability to drink water laced with arsenic.
According to Professor Brian Cox, if ghosts existed, CERN's atom smasher should have found them by now.